I get following error message:
Unable to load DLL 'Xeneth.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
Although the Xeneth.dll has been added under the references I get this error message on this codeline:
XCHANDLE = (uint)DllImports.XC_OpenCamera(CameraName, StatusCallback, IntPtr.Zero);
thanks in advance for the help..!
That error code is a COM error wrapping the Win32 error code ERROR_MOD_NOT_FOUND. This means that either Xeneth.dll or one of its dependencies cannot be found on the DLL search path.
You should consult the documentation for this library to work out where it must be deployed. Usually, and most sensibly, unmanaged DLLs should be placed in the same directory as the executable file. Doing so ensures that they are located.
If doing that does not help, then you may need to deal with missing dependencies. Again check the documentation. Do you need to install an MSVC runtime on which this DLL depends?
If all this fails then you might try using a tool like Dependency Walker, and use its profiling mode to try to work out what is missing. However, I do suggest that you start with the library documentation first. It's always best to follow and understand the instructions.
Related
I have a dll(PROFKT10.DLL) which is very old and using by vb6 project. i dont even know in which language it is compiled. i need to use this dll in my .Net application but i can not add this as reference and getting the popup message as "Please make sure that the file is accessible, and that it is a valid assembly or COM component".
I tried to import this by using DllImport attribute but here getting "An unhandled exception of type 'System.BadImageFormatException' occurred.
Additional information: An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)"
Please anyone help me in getting the source code of this dll solution for the exception or any other suggestions. Thanks in advance
BadImageFormatException can have many causes, see its MSDN page.
If the DLL dates back to VB6, it might even be a 16bit DLL. In this case, you're out of luck, because 16bit executables are not supported on 64bit Windows.
To find out, google for "DLL PE Viewer" or use this list for tools that provide information about your DLL.
I am attempting to load 64bit dll into a 64 bit platform. I keep on getting the error below. I googled it for and tryed a lot of suggestion. I cleaned the solution rebuilt. Still have the same problem. Any suggestions.
Ps: It is for a C# WFP i am writing.
"Could not load file or assembly 'xxx.dll' or one of its dependencies. The specified module could not be found"
Thank you.
This can occur if the assembly you load has dependencies on other assemblies which aren't available when the process tries to use the type.
You can check the InnerException property of the exception, which often provides more details. If that doesn't work, the best way to diagnose is to use the Fusion Log Viewer, which is Microsoft's tool for diagnosing assembly load issues in detail.
I am using a third party application which is using DLLImport in their code. The COM DLl that they are using, they gave it to me separately.
I did put the file in the Bin/Debug folder of the third party source code and recompiled the code.
After doing that I am seeing Unable to load Module error on my application. Any ideas why it could be the case?
It is throwing following error:
Unable to load DLL 'QMSL_MSVC10D.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)"}
i did run dependency walker in it and I see following errors:
Error: At least one required implicit or forwarded dependency was not found.
Error: At least one module has an unresolved import due to a missing export function in an implicitly dependent module.
Error: Modules with different CPU types were found.
Warning: At least one delay-load dependency module was not found.
Warning: At least one module has an unresolved import due to a missing export function in a delay-load dependent module.
My question is that how could they compile the DLL with these many errors? And what are the chances that there is ANY co-relation between the errors I am seeing and what we are seeing in Dependency walker?
In addition to "DLL not found", that error message can also mean that one of the DLL's dependencies was not found, the DLL or one of its dependencies has a different architecture than the host application, or the initialization function DllMain returned a failure code.
Use Process Monitor to watch file activity, and check whether there's a failure opening a DLL file (which may be the one listed in the DllImport but could also be a dependency)
Based on the filename of the DLL, it sounds as if it is built against the Debug version of the C++ libraries. It's not allowed to distribute the Debug version of the runtime library; your source needs to give you a DLL built against the release version of runtime libraries (debugging can be enabled inside their DLL, but they can't use the debug runtime).
If this is COM DLL, you need to register it with "regsvr32 name.dll". Type it in Command Prompt and press "Enter." Replace "name.dll" with the one that you have dll.
This error also can occur if DLL has to be part of GAC and not bin folder.
The DllImport works only if you are using it in a public class and when using the following namespaces:
using System;
using System.Runtime;
using System.Runtime.InteropServices;
[DllImport("DLL_NAME")]
and Code :
if (!Environment.GetEnvironmentVariable("PATH", EnvironmentVariableTarget.Process).Contains(HttpRuntime.BinDirectory))
Environment.SetEnvironmentVariable("PATH", Environment.GetEnvironmentVariable("PATH", EnvironmentVariableTarget.Process) + ";" + HttpRuntime.BinDirectory, EnvironmentVariableTarget.Process);
Preface: I know basically nothing about C#.
I've added a dll to my project. I have no build errors, but when I try to run, I get an error that says it can't find the dll. I've tried copying it to the output directories too. To no avail.
Any idea what could be happening?
Specific Error:
System.IO.FileNotFoundException was unhandled Message=Could not load
file or assembly 'controllib_clr.dll' or one of its dependencies. The
specified module could not be found. Source=controllib_demo_cs...
I'll be happy to add more information if need be. :) I just don't know what info would be beneficial given my (very) limited knowledge.
It looks like it is not able to find/load some dependencies dlls I will use DependencyWalker to figure out what it is missing http://www.dependencywalker.com/
Is it a managed (.NET) or an unmanaged (native) DLL? I'm assuming unmanaged.
FileNotFoundException is commonly thrown when missing a dependency. The DLL you are loading might require any number of other DLLs on load. In most cases it won't tell you which file it needs. You have to refer to the documentation for that DLL.
If it exists, in your output folder, then most likely its one of its dependencies that is missing. You can fix this by adding its dependencies as references in your project.
if it doesn't exist in your output, then, check that "Copy Local" is set in the properties of the reference.
I'm calling an unmanaged dll from my managed c# code and wanted to check I'm calling the right version.
The code I'm trying to load the assembly (to then get the resource file and then get the version) is:
cur_version = Assembly.LoadFile("X:\Workspace\yreceipts_pos\yRprintProcessor\Debug\yRprintProcessor.dll");
It's failing because of this error:
The module was expected to contain an assembly manifest. (Exception from HRESULT: 0x80131018)
Does anyone know how to get around this or have a better way to check the version of an unmanaged dll from managed c# code?
Thanks in advance,
Richard
As stated by logicnp; the Assembly.Load is for managed assemblies only. To determine the version of any version-ed file you can use System.Diagnostics.FileVersionInfo.GetVersionInfo(filename) and to load and call unmanaged procedures in DLLs you can refer to these articles:
http://blogs.msdn.com/jonathanswift/archive/2006/10/02/780637.aspx
http://blogs.msdn.com/jonathanswift/archive/2006/10/03/Dynamically-calling-an-unmanaged-dll-from-.NET-_2800_C_23002900_.aspx
Good luck...
The reason it fails is becuase you cannot use Assembly.Load to load unmanaged dlls. See the link suggested by David Brown.